6bb27d7349
Now that the only field in struct sys_timer is .init, delete the struct, and replace the machine descriptor .timer field with the initialization function itself. This will enable moving timer drivers into drivers/clocksource without having to place a public prototype of each struct sys_timer object into include/linux; the intent is to create a single of_clocksource_init() function that determines which timer driver to initialize by scanning the device dtree, much like the proposed irqchip_init() at: http://www.spinics.net/lists/arm-kernel/msg203686.html Includes mach-omap2 fixes from Igor Grinberg. Tested-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Stephen Warren <swarren@nvidia.com>
340 lines
9.2 KiB
C
340 lines
9.2 KiB
C
/*
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* arch/arm/mach-orion5x/common.c
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*
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* Core functions for Marvell Orion 5x SoCs
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*
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* Maintainer: Tzachi Perelstein <tzachi@marvell.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/serial_8250.h>
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#include <linux/mv643xx_i2c.h>
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#include <linux/ata_platform.h>
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#include <linux/delay.h>
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#include <linux/clk-provider.h>
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#include <net/dsa.h>
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#include <asm/page.h>
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#include <asm/setup.h>
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#include <asm/system_misc.h>
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#include <asm/timex.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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#include <mach/bridge-regs.h>
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#include <mach/hardware.h>
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#include <mach/orion5x.h>
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#include <linux/platform_data/mtd-orion_nand.h>
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#include <linux/platform_data/usb-ehci-orion.h>
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#include <plat/time.h>
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#include <plat/common.h>
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#include <plat/addr-map.h>
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#include "common.h"
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/*****************************************************************************
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* I/O Address Mapping
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****************************************************************************/
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static struct map_desc orion5x_io_desc[] __initdata = {
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{
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.virtual = (unsigned long) ORION5X_REGS_VIRT_BASE,
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.pfn = __phys_to_pfn(ORION5X_REGS_PHYS_BASE),
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.length = ORION5X_REGS_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long) ORION5X_PCIE_WA_VIRT_BASE,
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.pfn = __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE),
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.length = ORION5X_PCIE_WA_SIZE,
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.type = MT_DEVICE,
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},
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};
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void __init orion5x_map_io(void)
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{
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iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc));
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}
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/*****************************************************************************
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* CLK tree
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****************************************************************************/
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static struct clk *tclk;
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void __init clk_init(void)
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{
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tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
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orion5x_tclk);
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orion_clkdev_init(tclk);
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}
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/*****************************************************************************
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* EHCI0
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****************************************************************************/
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void __init orion5x_ehci0_init(void)
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{
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orion_ehci_init(ORION5X_USB0_PHYS_BASE, IRQ_ORION5X_USB0_CTRL,
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EHCI_PHY_ORION);
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}
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/*****************************************************************************
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* EHCI1
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****************************************************************************/
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void __init orion5x_ehci1_init(void)
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{
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orion_ehci_1_init(ORION5X_USB1_PHYS_BASE, IRQ_ORION5X_USB1_CTRL);
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}
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/*****************************************************************************
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* GE00
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****************************************************************************/
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void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
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{
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orion_ge00_init(eth_data,
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ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM,
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IRQ_ORION5X_ETH_ERR,
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MV643XX_TX_CSUM_DEFAULT_LIMIT);
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}
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/*****************************************************************************
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* Ethernet switch
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****************************************************************************/
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void __init orion5x_eth_switch_init(struct dsa_platform_data *d, int irq)
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{
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orion_ge00_switch_init(d, irq);
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}
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/*****************************************************************************
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* I2C
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****************************************************************************/
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void __init orion5x_i2c_init(void)
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{
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orion_i2c_init(I2C_PHYS_BASE, IRQ_ORION5X_I2C, 8);
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}
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/*****************************************************************************
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* SATA
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****************************************************************************/
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void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
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{
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orion_sata_init(sata_data, ORION5X_SATA_PHYS_BASE, IRQ_ORION5X_SATA);
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}
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/*****************************************************************************
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* SPI
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****************************************************************************/
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void __init orion5x_spi_init()
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{
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orion_spi_init(SPI_PHYS_BASE);
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}
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/*****************************************************************************
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* UART0
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****************************************************************************/
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void __init orion5x_uart0_init(void)
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{
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orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
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IRQ_ORION5X_UART0, tclk);
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}
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/*****************************************************************************
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* UART1
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****************************************************************************/
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void __init orion5x_uart1_init(void)
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{
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orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
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IRQ_ORION5X_UART1, tclk);
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}
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/*****************************************************************************
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* XOR engine
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****************************************************************************/
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void __init orion5x_xor_init(void)
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{
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orion_xor0_init(ORION5X_XOR_PHYS_BASE,
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ORION5X_XOR_PHYS_BASE + 0x200,
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IRQ_ORION5X_XOR0, IRQ_ORION5X_XOR1);
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}
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/*****************************************************************************
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* Cryptographic Engines and Security Accelerator (CESA)
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****************************************************************************/
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static void __init orion5x_crypto_init(void)
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{
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orion5x_setup_sram_win();
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orion_crypto_init(ORION5X_CRYPTO_PHYS_BASE, ORION5X_SRAM_PHYS_BASE,
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SZ_8K, IRQ_ORION5X_CESA);
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}
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/*****************************************************************************
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* Watchdog
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****************************************************************************/
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void __init orion5x_wdt_init(void)
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{
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orion_wdt_init();
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}
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/*****************************************************************************
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* Time handling
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****************************************************************************/
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void __init orion5x_init_early(void)
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{
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orion_time_set_base(TIMER_VIRT_BASE);
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/*
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* Some Orion5x devices allocate their coherent buffers from atomic
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* context. Increase size of atomic coherent pool to make sure such
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* the allocations won't fail.
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*/
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init_dma_coherent_pool_size(SZ_1M);
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}
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int orion5x_tclk;
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int __init orion5x_find_tclk(void)
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{
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u32 dev, rev;
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orion5x_pcie_id(&dev, &rev);
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if (dev == MV88F6183_DEV_ID &&
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(readl(MPP_RESET_SAMPLE) & 0x00000200) == 0)
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return 133333333;
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return 166666667;
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}
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void __init orion5x_timer_init(void)
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{
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orion5x_tclk = orion5x_find_tclk();
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orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
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IRQ_ORION5X_BRIDGE, orion5x_tclk);
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}
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/*****************************************************************************
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* General
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****************************************************************************/
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/*
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* Identify device ID and rev from PCIe configuration header space '0'.
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*/
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void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
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{
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orion5x_pcie_id(dev, rev);
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if (*dev == MV88F5281_DEV_ID) {
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if (*rev == MV88F5281_REV_D2) {
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*dev_name = "MV88F5281-D2";
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} else if (*rev == MV88F5281_REV_D1) {
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*dev_name = "MV88F5281-D1";
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} else if (*rev == MV88F5281_REV_D0) {
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*dev_name = "MV88F5281-D0";
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} else {
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*dev_name = "MV88F5281-Rev-Unsupported";
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}
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} else if (*dev == MV88F5182_DEV_ID) {
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if (*rev == MV88F5182_REV_A2) {
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*dev_name = "MV88F5182-A2";
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} else {
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*dev_name = "MV88F5182-Rev-Unsupported";
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}
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} else if (*dev == MV88F5181_DEV_ID) {
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if (*rev == MV88F5181_REV_B1) {
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*dev_name = "MV88F5181-Rev-B1";
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} else if (*rev == MV88F5181L_REV_A1) {
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*dev_name = "MV88F5181L-Rev-A1";
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} else {
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*dev_name = "MV88F5181(L)-Rev-Unsupported";
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}
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} else if (*dev == MV88F6183_DEV_ID) {
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if (*rev == MV88F6183_REV_B0) {
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*dev_name = "MV88F6183-Rev-B0";
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} else {
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*dev_name = "MV88F6183-Rev-Unsupported";
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}
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} else {
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*dev_name = "Device-Unknown";
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}
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}
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void __init orion5x_init(void)
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{
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char *dev_name;
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u32 dev, rev;
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orion5x_id(&dev, &rev, &dev_name);
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printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
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/*
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* Setup Orion address map
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*/
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orion5x_setup_cpu_mbus_bridge();
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/* Setup root of clk tree */
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clk_init();
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/*
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* Don't issue "Wait for Interrupt" instruction if we are
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* running on D0 5281 silicon.
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*/
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if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
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printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
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disable_hlt();
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}
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/*
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* The 5082/5181l/5182/6082/6082l/6183 have crypto
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* while 5180n/5181/5281 don't have crypto.
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*/
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if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) ||
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dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID)
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orion5x_crypto_init();
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/*
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* Register watchdog driver
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*/
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orion5x_wdt_init();
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}
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void orion5x_restart(char mode, const char *cmd)
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{
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/*
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* Enable and issue soft reset
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*/
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orion5x_setbits(RSTOUTn_MASK, (1 << 2));
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orion5x_setbits(CPU_SOFT_RESET, 1);
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mdelay(200);
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orion5x_clrbits(CPU_SOFT_RESET, 1);
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}
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/*
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* Many orion-based systems have buggy bootloader implementations.
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* This is a common fixup for bogus memory tags.
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*/
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void __init tag_fixup_mem32(struct tag *t, char **from,
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struct meminfo *meminfo)
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{
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for (; t->hdr.size; t = tag_next(t))
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if (t->hdr.tag == ATAG_MEM &&
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(!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
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t->u.mem.start & ~PAGE_MASK)) {
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printk(KERN_WARNING
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"Clearing invalid memory bank %dKB@0x%08x\n",
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t->u.mem.size / 1024, t->u.mem.start);
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t->hdr.tag = 0;
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}
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}
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